Slide fastener



Aug. 31, 1937. D. REITER SLIDE FASTENER Filed April 1, 1936 24 DAN/ELQ5/75 2 A 10 INVENTOR.

h/l TA/ESS. BY 7 ATTORNEYS.

Patented Aug. 31 1937 I 2,091,832

UNITED STATES PATENT OFFICE SLIDE FASTENER Daniel I. Reiter, New York,N. Y., assignor to v Gilda Corporation of America, New York, N. Y., acorporation of New York Application April 1, 1936, Serial No. 71,994

3 Claims. (01. re-207) This invention relates to slide fastening devicesslide fastener device in its entirety and which is and more particularlyto such type of fastening shown in Figures 1 and 2 of the drawing asbeing device as set forth in U. S. Letters Patent No. operativelyassociated with a bag ii. The bag 2,013,706, granted to Louis Wiesenfeldand Na- II may be constructed of any flexible material, 5 than Kaseunder date of September 10, 1935. one side of which is open as at I2,the edges of. 5

In slide fastening devices of the-kind set forth the walls of the bag atthe opening i2 being in the above mentioned prior patent, the sameinformed with offset beads i3--i3. The beads l3 cludes a plurality ofslide fastener members are offset so that when the walls of the bag arefixedly connected at spaced distances along a brought together in closedrelation, one head flexible element, the fastening members in turn lapsthe other as clearly shown in Figure 2 of 1c being slidably associatedwith the bead edges the drawing. of an opening to be closed to draw theedges to- The slide fastener device it includes a plurality gether whenthe fastening device is in closed of substantially U-shaped slidefastener memposition, and for releasing the bead edges to bars M whichare fixedly connected at spaced facilitate spreading of the alls of theopening distances to a flexible element in the form of a 15 when thefastening devi is in open position. chain i5.

The main object of this invention is to reduce Each of the slidefastener members i4 is conthe friction between the slide fastenermembers structed of a single piece of flat stiff bendable and the edgesof the article on which they are metal, the same being bent intosubstantially captively and slidably associated which will pro- U-shapeto provide a rounded bight portion it 20 vide a freer sliding movementof the fastener I and straight leg portions ii and it. The termimembersto prevent accidental jamming of the nal end of the leg portion 98 isbent inwardly as same during sliding movement, and to reduce at it andthence outwardly in rounded form to wear of the material from which thearticle is provide an eye 20. By reference to Figure 2 it constructed.will be seen that the eye 20 is inwardly offset 25 Anotherfeature of theinvention resides in a with respect to the leg it for a purpose to beslide fastener device having the above mentioned presently explained.

feature which does not increase the cost of man- The leg i'i has itsterminal end provided with ufact'ure over that of the slide fastenerdevice an inwardly punched teat or protuberance 2t, set forth in theabove mentioned patent. the same being disposed opposite the rounded 30Other objects of the invention will appear as inwardly bent portion iton the leg it. In Figthe following specification is read in conjunctionures l to 5 of the drawing, the teat 2i is roundwith the accompanyingdrawing, in which, ed and has its inner surface convex so as to Figure 1is a perspective view of a bag equipped provide a minimum bearingcontact with one of with my improved slide fastener device. the sidewalls of the bag it. The slide fasten 35 Figure 2 is an enlargedvertical transverse secer members it are secured to the flexibleeletional view on the line 2-2 of Figure l. ment it, by passing theelement through the Figure 3 is a detail perspective view of one eyes26. The eyes it are normally open as shown of the slide fastener membersper se. in Figure 5 but during assembly, the same are Figure 4 is a rearelevational view of one of pressed closed about the flexible element to40 the slide fastener members. clampvingly engage the same.

Figure 5 is an enlarged vertical sectional view Prior to the applicationof the slide fastener on the line 55 of Figure 4. device it to the bagit, the U-shape slide fasten- Figure Bis a rear elevational view of amodified er members M are relatively open, but during form of slidefastener member. attachment of the fastener device to the beaded 45Figure '7 is a vertical transverse sectional view edges of the bag, thefastener members it are on the line 'i'| of Figure 6. inserted over thebeaded edges and pressure ap- Figure 8 is a vertical sectional view of afurplied to the legs ii and it to bend them about ther modification ofslide fastener member. the edges to the form shown in Figure 2, at

60 Figure 9 is a rear elevational view of a still which time the beadsid-it lie within the legs further modified form of slide fastenermember. and bight portions whereas the terminal ends of Figure 101s avertical transverse sectional view the legs extend inwardly beyond theplane of on the line 50-50 of Figure 9. the beads so that the inwardlybent portion it and Referring to the drawing by reference charaethe teat2i slidably contact the exterior side ters, the numeral i0 designates myimproved walls of the bag. The inner rounded portion of 55 the eye 20and the rounded teat 2| provide a minimum contact surface with the sidewalls of the bag and form a restricted entrance to prevent accidentalpulling off of the members M from 5 the beaded edges.

To prevent accidental separation of the slide fastener member I from thebag, it is customary to captively secure one of the end fastener membersl4 to the bag and this anchored member is 10 designated by the letter A.Thus an operator by grasping the other end slide fastener member maymove the same toward the right in Figure 1 and slide all of the fastenermembers to a position at the right side of the bag, the anchor 15 memberA serving as a stop. To close the fastening device, the free end slidemember I4 is pulled toward the left to the position shown in Figure 1.By providing the minimum contacting surfaces between the terminal endsof the legs of the 20 U-shaped fastener members, the friction betweenthe members and the walls of the bag is greatly reduced, thus permittinga freer sliding movement of the slide fastener members and a reductionof wear between the said members and the 25 walls of the bag.

Whereas I have illustrated the fastening device in association with abag, it will be understood that the fastening device is adaptable foruse on many other articles.

30 In Figures 6 to 10 inclusive, I have illustrated modified forms ofproturberances which may be formed on the leg l1, all of which arepunched inwardly from the leg and disposed inwardly of the confines ofthe edges of said leg. For in- 5 stance, in Figures 6 and '7 theprotuberance is elongated and designated 22, the same extending in adirection transversely on the leg on which it is formed. Theprotuberance 22 is well rounded on its inner side but in Figure 8 thereis shown 40 a protuberance 23 which has its inner side pointed with thepointed end rounded. In Figures 9 and 10 of the drawing, theprotuberance 24 is cone shaped with the tip of the cone rounded to avoida. sharp edge.

While I have shown and described what I consider to be the mostpractical embodiments of my invention, I wish it to be understood thatsuch changes and alterations as come within the appended claims may beresorted to if desired.

Having thus described the invention, what I claim as new and desire tosecure by Letters Patent of the United States, is:--

1. A slide fastener comprising a U-shaped slide member having relativelythin flat terminal 'leg' portions, one of said leg portions terminatingin an inwardly offset round eye, a teat extending inwardly from theother leg portion of said U- shaped slide member opposite the said eyeand having a rounded crown portion adapted to coact with said eye duringsliding engagement of the slide fastener with opposite sides of anarticle when in use.

2. A slide fastener comprising a U-shaped slide member formed from asingle piece of stiff flat bendable material, an inwardly extending eyeformed on the terminal end of one of the legs of said Ushaped slidemember, and an inwardly extending teat formed on the other leg of saidU-shaped slide member inwardly of the confines of the edges thereof anddisposed opposite said eye, said teat having-a rounded crown portion.

3. A slide fastener comprising a single piece of stiff fiat bendablematerial bent into -U-shape to provide a bight portion and leg portions,a round eye formed on the terminal end .of one of the leg portions andprojecting inwardly of the plane of the inner face thereof, and arounded protuberance struck inwardly from the other leg portion anddisposed opposite said eye for coaction therewith when the slidefastener is in use upon an article to be closed thereby.

DANIEL I. REITER.

